Gene Conversion Tracts from Wild-Type and <i>rec</i> Mutants

<div><p>(A) Schematic of the <i>rosy</i> locus. Intron/exon structure is shown, with coding sequences filled. The positions of the selected sites corresponding to the <i>ry⁶⁰⁶</i> and <i>ry⁵³¹</i> mutations are shown. Heterologies between the <i>ry⁶⁰⁶</i> and <i>ry⁵³¹</i> chromosomes are indicated as lollipops on the scale bar. These are all single nucleotide polymorphisms, except for −1029 and −685, which are insertions of one- and four-bp, respectively, in <i>ry⁵³¹</i> relative to <i>ry⁶⁰⁶</i>. The scale is in bp, using the coordinate system of Bender et al. [<a href="http://www.plosgenetics.org/article/info:doi/10.1371/journal.pgen.0010040#pgen-0010040-b56" target="_blank">56</a>].</p><p>(B and C) Tract lengths observed in NCOs recovered from wild-type (B) and <i>rec</i> mutants (C). Each bar represents an independent event, with the open circle denoting the selected marker (<i>ry⁶⁰⁶</i> or <i>ry⁵³¹</i> mutant sites). Black bars represent the minimum tract length for each event, with co-converted sites marked by white lines. Dotted lines represent the maximum tract length possible based on the next unconverted polymorphism. The dashed line in the second <i>ry⁵³¹</i> conversion on panel B indicates a possible discontinuous conversion tract.</p>